"Fossies" - the Fresh Open Source Software Archive

Member "complexity-1.13/m4/pid_t.m4" (10 Oct 2020, 1412 Bytes) of package /linux/privat/complexity-1.13.tar.xz:


As a special service "Fossies" has tried to format the requested text file into HTML format (style: standard) with prefixed line numbers. Alternatively you can here view or download the uninterpreted source code file.

    1 # pid_t.m4 serial 3
    2 dnl Copyright (C) 2020 Free Software Foundation, Inc.
    3 dnl This file is free software; the Free Software Foundation
    4 dnl gives unlimited permission to copy and/or distribute it,
    5 dnl with or without modifications, as long as this notice is preserved.
    6 
    7 # The following implementation works around a problem in autoconf <= 2.69.
    8 m4_version_prereq([2.69c], [] ,[
    9 
   10 dnl Define pid_t if the headers don't define it.
   11 AC_DEFUN([AC_TYPE_PID_T],
   12 [
   13   AC_CHECK_TYPE([pid_t],
   14     [],
   15     [dnl On 64-bit native Windows, define it to the equivalent of 'intptr_t'
   16      dnl (= 'long long' = '__int64'), because that is the return type
   17      dnl of the _spawnv* functions
   18      dnl <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/spawnvp-wspawnvp>
   19      dnl and the argument type of the _cwait function
   20      dnl <https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/cwait>.
   21      dnl Otherwise (on 32-bit Windows and on old Unix platforms), define it
   22      dnl to 'int'.
   23      AC_COMPILE_IFELSE(
   24        [AC_LANG_PROGRAM([[
   25           #if defined _WIN64 && !defined __CYGWIN__
   26           LLP64
   27           #endif
   28           ]])
   29        ],
   30        [gl_pid_type='int'],
   31        [gl_pid_type='__int64'])
   32      AC_DEFINE_UNQUOTED([pid_t], [$gl_pid_type],
   33        [Define as a signed integer type capable of holding a process identifier.])
   34     ],
   35     [AC_INCLUDES_DEFAULT])
   36 ])
   37 
   38 ])# m4_version_prereq 2.70